/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.streaming.api.functions.sink;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import org.apache.flink.annotation.PublicEvolving;
/**
* Writes tuples in csv format.
*
* @param <IN>
* Input tuple type
*/
@PublicEvolving
public class WriteFormatAsCsv<IN> extends WriteFormat<IN> {
private static final long serialVersionUID = 1L;
@Override
protected void write(String path, ArrayList<IN> tupleList) {
try (PrintWriter outStream = new PrintWriter(new BufferedWriter(new FileWriter(path, true)))) {
for (IN tupleToWrite : tupleList) {
String strTuple = tupleToWrite.toString();
outStream.println(strTuple.substring(1, strTuple.length() - 1));
}
} catch (IOException e) {
throw new RuntimeException("Exception occured while writing file " + path, e);
}
}
}